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Minimum Clearance Requirements for LUU368HV, LUU428HV, LUU488HV Outdoor Units
Figures below and on the next page illustrate clearance requirements for various installation scenarios for 38,000 Btu/h (LUU368HV), 42,000
Btu/h (LUU428HV), and 48,000 Btu/h (LUU488HV) outdoor units. Use the hot isle / cold isle approach when placing multiple units in close
proximity to each other. Outdoor unit fans draw air from the back of the unit and discharges out the front. Place units back to back and face to
face.
Legend
LR = Rear wall height
LF = Front wall height
H = Unit height
• Installation clearances must comply with local building codes.
• All figures not to scale.
• Never place multiple units facing back to front or front to back as shown immediately below here or
high and low system pressure problems may occur.
Min. 4"
Min. 20"
LF ≤ H
Min. 40"
LR < H
Max. 20"
LR
H
Min. 10"
Min. 40"
Single Unit—High Front Wall with Building Overhang
and No Side Walls
Single Unit—High Rear Wall and Low Front Wall
with No Side Walls
A
i
r
fl
o
w
A
i
r
fl
o
w
LF
H
Min. 4"
Min. 4"
Min. 4"
Min. 4"
Min. 20"
Min. 4"
Min. 4"
Min. 40"
Min. 12"
Min. 6"
Min. 4"
Max. 20"
Min. 40"
Min. 40"
Min. 12"
Min. 40"
Max. 20"
Max. 20"
Min 40"
Min. 20
"
Single Unit—High Rear Wall with or
without High Side Walls
Single Unit—High Rear and Front Walls with
No Side Walls
Side by Side—High Rear and Side Walls
Single Unit—High Rear and Side Walls with
Building Overhang
Single Unit—High Front and Rear Walls with
Building Overhang and No Side Walls
Single Unit—High Rear Wall and Low Front Wall
with Building Overhang and No Side Walls
A
i
r
fl
o
w
A
i
r
fl
o
w
A
i
r
fl
o
w
A
i
r
fl
o
w
A
i
r
fl
o
w
A
i
r
fl
o
w
LF ≥ H
LF
H
Min. 6"
LF ≤ H
LF
H
Airflow
Airflow
Figure 49: Improper Outdoor Unit Placement. Figure 50: Proper Outdoor Unit Placement and Clearances.
Figure 51: Proper Outdoor Unit Placement and Clearances, continued.
CLEARANCES
Outdoor Unit
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
76 | APPLICATION
Single Zone Vertical Air Handling Unit Engineering Manual
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